When a ship explodes, it generates an EM Pulse the blocks sensors for perceiving anything in or behind this hex. The duration would be 1 turn for every 250pts of power generation capability on the ship. Of course, ships IN the hex of explosion would be blinded.

Sensors blocked in this manner must reroll for target lock once their sensors have cleared. Any ordnance (missiles/drones/seeking weapons) passing through the hex of explosion are rendered inert or otherwise ineffective.